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Circles and 3-4-5-Triangles
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表达式20: "E" Subscript, 2 , Baseline equals "R" Subscript, 0 , Baseline
E
2
=
R
0
equals
=
6
6
20
表达式21: "F" Subscript, 1 , Baseline equals "R" Subscript, 0 , Baseline
F
1
=
R
0
equals
=
6
6
21
表达式22: "F" Subscript, 2 , Baseline equals "R" Subscript, 0 , Baseline
F
2
=
R
0
equals
=
6
6
22
表达式23: "G" Subscript, 1 , Baseline equals "R" Subscript, 0 , Baseline
G
1
=
R
0
equals
=
6
6
23
表达式24: "G" Subscript, 2 , Baseline equals negative "R" Subscript, 1 , Baseline
G
2
=
−
R
1
equals
=
negative 3
−
3
24
表达式25: "x" Subscript, 0 , Baseline equals "B" Subscript, 1 , Baseline plus StartFraction, "R" Subscript, 1 , Baseline Over "B" Subscript, "C" , Baseline , EndFraction left parenthesis, "C" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis
x
0
=
B
1
+
R
1
B
C
C
1
−
B
1
equals
=
negative 1.2
−
1
.
2
25
表达式26: "y" Subscript, 0 , Baseline equals "B" Subscript, 2 , Baseline plus StartFraction, "R" Subscript, 1 , Baseline Over "B" Subscript, "C" , Baseline , EndFraction left parenthesis, "C" Subscript, 2 , Baseline minus "B" Subscript, 2 , Baseline , right parenthesis
y
0
=
B
2
+
R
1
B
C
C
2
−
B
2
equals
=
2.4
2
.
4
26
表达式27: "B" Subscript, "C" , Baseline equals StartRoot, left parenthesis, "C" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis squared plus left parenthesis, "C" Subscript, 2 , Baseline minus "B" Subscript, 2 , Baseline , right parenthesis squared , EndRoot
B
C
=
C
1
−
B
1
2
+
C
2
−
B
2
2
equals
=
5
5
27
Graphs
Graphs
对学生隐藏该文件夹。
28
表达式29: polygon left parenthesis, "E" , "G" , right parenthesis
p
o
l
y
g
o
n
E
,
G
29
表达式30: polygon left parenthesis, "H" , "B" , "C" , right parenthesis
p
o
l
y
g
o
n
H
,
B
,
C
30
表达式31: polygon left parenthesis, "H" , "B" , "C" , right parenthesis
p
o
l
y
g
o
n
H
,
B
,
C
31
表达式32: left parenthesis, "R" Subscript, 0 , Baseline cos "t" , "R" Subscript, 0 , Baseline sin "t" , right parenthesis
R
0
c
o
s
t
,
R
0
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
32
表达式33: polygon left parenthesis, "D" , "E" , "F" , "G" , right parenthesis
p
o
l
y
g
o
n
D
,
E
,
F
,
G
33
表达式34: polygon left parenthesis, left parenthesis, negative "R" Subscript, 0 , Baseline , 0 , right parenthesis , left parenthesis, "R" Subscript, 0 , Baseline , 0 , right parenthesis , right parenthesis
p
o
l
y
g
o
n
−
R
0
,
0
,
R
0
,
0
34
表达式35: left parenthesis, "C" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline cos "t" , "C" Subscript, 2 , Baseline plus "R" Subscript, 2 , Baseline sin "t" , right parenthesis
C
1
+
R
2
c
o
s
t
,
C
2
+
R
2
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
35
表达式36: left parenthesis, "C" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline cos "t" , "C" Subscript, 2 , Baseline plus "R" Subscript, 2 , Baseline sin "t" , right parenthesis
C
1
+
R
2
c
o
s
t
,
C
2
+
R
2
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
36
表达式37: left parenthesis, left bracket, negative "R" Subscript, 1 , Baseline , StartFraction, "R" Subscript, 0 , Baseline Over 2 , EndFraction , right bracket plus "R" Subscript, 1 , Baseline cos "t" , "R" Subscript, 1 , Baseline sin "t" , right parenthesis
−
R
1
,
R
0
2
+
R
1
c
o
s
t
,
R
1
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
37
表达式38: left parenthesis, "C" Subscript, 1 , Baseline plus "t" "R" Subscript, 2 , Baseline , "C" Subscript, 2 , Baseline , right parenthesis
C
1
+
t
R
2
,
C
2
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
1
1
定义域t最大值：
38
表达式39: polygon left parenthesis, "A" , "C" , right parenthesis
p
o
l
y
g
o
n
A
,
C
39
Points
Points
对学生隐藏该文件夹。
40
62
技术支持
技术支持
H
A
B
C
D
E
F
G
Start black, "A" "B" "C" equals 3 minus 4 minus 5 minus "T" "r" "i" "a" "n" "g" "l" "e" End black
A
B
C
=
3
−
4
−
5
−
T
r
i
a
n
g
l
e
Start black, "R" Subscript, 1 , Baseline equals StartFraction, "R" Subscript, 0 , Baseline Over 2 , EndFraction equals 3 End black
R
1
=
R
0
2
=
3
Start black, StartFraction, "R" Subscript, 2 , Baseline Over "R" Subscript, 1 , Baseline , EndFraction equals 2 thirds End black
R
2
R
1
=
2
3
Start black, "R" Subscript, 2 , Baseline equals 2 thirds times "R" Subscript, 1 , Baseline equals 2 End black
R
2
=
2
3
·
R
1
=
2
Start black, "R" Subscript, 1 , Baseline End black
R
1
Start black, "R" Subscript, 2 , Baseline End black
R
2
90°
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
功能
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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